CN212896116U - Water cushion pond overhauling, draining and refilling system - Google Patents

Abstract

The utility model relates to a pond of plunge pool overhauls drainage and water refilling system. The utility model aims at providing a safe and reliable, feasible pond of filling with water overhauls drainage and water system of refilling. The technical scheme of the utility model is that: the system is arranged in a secondary dam and is provided with: the self-flowing water filling and draining pipe is communicated with the upstream plunge pool of the secondary dam and the downstream river channel; the flowmeter is arranged on the self-flowing water filling and draining pipe; the water collecting tank is arranged in a region where the bottom of the plunge pool is connected with the secondary dam; the maintenance drainage pipeline comprises a maintenance water intake pipe, a maintenance drainage main pipe I, maintenance drainage branch pipes and a maintenance drainage main pipe II; the backwashing pipeline comprises a maintenance water intake pipe, a maintenance drainage main pipe I and a maintenance drainage main pipe II; the pressure transmitter is arranged on the maintenance drainage main pipe I and is used for monitoring the water level of the water collecting tank in the plunge pool; and the control monitoring system is in circuit connection with the flowmeter and the pressure transmitter. The utility model is suitable for a hydraulic and hydroelectric engineering field.

Description

Water cushion pond overhauling, draining and refilling system

Technical Field

The utility model relates to a pond of plunge pool overhauls drainage and water refilling system. Is suitable for the field of water conservancy and hydropower engineering.

Background

The plunge pool is an energy dissipation and impact prevention protection project behind the arch dam, erosion damage of a dam foundation after the arch dam is drained is prevented, and safety and stability of the dam are protected. The erosion damage to the plunge pool can be caused by bank slope collapse during flood discharge operation of arch dams or heavy rain. In order to ensure the safety of the dam, the plunge pool generally needs to be pumped, overhauled and maintained regularly.

(1) At present, the temporary pumping and drainage system is mostly adopted for pumping water and emptying to overhaul the plunge pool of large hydropower stations such as the second beach, the Raschig tile and the bay which are built in China.

The temporary pumping mode mainly has the following defects: 1. the system construction workload is large, and the drainage system and the assembly procedure are complicated; 2. the whole process of the system basically needs manual intervention, automatic control and monitoring cannot be realized, and operation and maintenance are inconvenient; 3. the equipment of the water pumping system is arranged outdoors, the failure rate of the drainage system is high, the working efficiency is low, and the drainage time is long; 4. the temporary power supply and the electromechanical equipment are exposed outside, and potential safety hazards can be brought to workers.

(2) The chinese patent 'water supply and drainage system of plunge pool' with patent number 201020554462.5 provides a scheme for setting up fixed pumping and drainage pump house in the secondary dam for the plunge pool to overhaul, and its advantage is: compared with the prior scheme, the automatic control operation of water filling and draining can be realized during the overhaul of the plunge pool.

However, this solution also has a number of disadvantages, mainly: 1. the water pumping pipes arranged in front of and behind the water pump are lower than the bottom of the plunge pool, and the arranged water discharging pipes are lower than or close to the bottom of the riverbed; 2. the water pump system is only provided with a control valve, the function is not clear, and after the water pressure before and after the plunge pool is balanced, the water pump needs to be operated under pressure to meet the normal operation requirement of the water pump, and a pump control valve and a pressure-making valve need to be added to meet the operation requirement of the system; 3. the maintenance drainage system of the plunge pool is composed of a plurality of pump sets, and the maintenance drainage system operates according to the comprehensive consideration of the water level in the plunge pool, and does not consider the collection and drainage when a small amount of water is accumulated at the bottom of the plunge pool; 4. the slopes on two sides of the large plunge pool are higher, the influence of the deformation of the valley amplitude of the river valley needs to be considered by the secondary dam behind the plunge pool, the deformation of the valley amplitude can cause great influence on the structure of the pump house and the water pumping and draining pipeline, and the influence is not considered by the patent; 5. the water supply pump, the valve and the drainage pipeline are safely operated to cause great potential safety hazards, the coping scheme of the factors is not reflected in the patent, filtering equipment is required to be arranged, 6, the water level range of the actual application of the water filling and drainage pipeline system is not considered, and meanwhile, the noise generated under high-speed water flow is not considered; 7. corresponding measures are also taken into consideration when the water taking and draining port of the downstream riverway is plugged and overhauled in the water body; therefore, according to the scheme of the utility model, a series of problems still need to be solved as engineering application, so that the practical value is not very high.

(3) The Chinese patent with the patent publication number of CN103556611B, namely a plunge pool water filling and draining system capable of generating power, provides a pumped storage power generation plant arranged in a drainage gallery of a two-way dam, and by arranging a reversible hydroelectric generating set, the reversible hydroelectric generating set utilizes the water energy fall of automatic water filling and draining of the plunge pool and collects the leakage water quantity of mountains at two sides for power generation, so that the requirements of overhauling and draining of the plunge pool are met, and the energy consumption of an auxiliary system of a power station is reduced; the maintenance equipment can be used for generating power for a long time, the utilization rate of the equipment is improved, and the failure rate of the equipment is reduced; the system greatly reduces the electric energy consumed during water charging and discharging and the operation and maintenance cost during the operation of the power station auxiliary system, and the technical scheme is more reliable, more energy-saving and more environment-friendly.

However, the above chinese patent No. 201020554462.5, entitled "water supply and drainage system for plunge pool", has no corresponding consideration, and therefore, it also limits the real use of the water supply and drainage system for plunge pool capable of generating power in plunge pool maintenance and drainage facilities.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: aiming at the problems, the safe, reliable and feasible maintenance drainage and water refilling system for the plunge pool is provided.

The utility model adopts the technical proposal that: the utility model provides a plunge pool overhauls drainage and water refilling system, sets up in two dams, its characterized in that has:

the self-flowing water filling and draining pipe is communicated with the upstream plunge pool and the downstream riverway of the secondary dam and is provided with a water filling and draining valve bank;

the flow meter is arranged on the self-flowing water charging and discharging pipe and is used for acquiring the flow change in the self-flowing water charging and discharging pipe;

the water collecting tank is arranged in a region where the bottom of the plunge pool is connected with the secondary dam, and a double-layer trash rack is arranged at a water inlet of the water collecting tank;

the maintenance drainage pipeline comprises a maintenance water taking pipe, a maintenance drainage header pipe I, maintenance drainage branch pipes and a maintenance drainage header pipe II, wherein one end of the maintenance water taking pipe is communicated with the water collecting tank, the other end of the maintenance water taking pipe is communicated with the maintenance drainage header pipe I, the maintenance drainage header pipe I is communicated with the maintenance drainage header pipe II through a plurality of maintenance drainage branch pipes, and a water outlet of the maintenance drainage header pipe II is communicated with a downstream river channel; wherein the overhaul water taking pipe is provided with an overhaul water taking isolation valve, and the overhaul water draining branch pipe is provided with an overhaul water draining pump;

the backwashing pipeline comprises the maintenance water taking pipe, a maintenance drainage main pipe I and a maintenance drainage main pipe II, wherein the maintenance drainage main pipe I and the maintenance drainage main pipe II are connected through a backwashing pipe, and a backwashing valve group is matched on the backwashing pipe;

the pressure transmitter is arranged on the maintenance main drainage pipe I and is used for monitoring the water level of a water collecting tank in the plunge pool;

the control monitoring system is in circuit connection with the flowmeter and the pressure transmitter;

the overhaul water intaking pipe divide into and overhauls water intaking pipe I and overhauls water intaking pipe II, and wherein the water intaking mouth of overhauing water intaking pipe I, II is located the different elevations of height in the pond of catchmenting respectively.

And the water outlet of the maintenance drainage main pipe II is communicated with the self-flowing water filling and draining pipe through a tee joint, and the water filling and draining valve group comprises an upstream water filling and draining valve group positioned at the upstream of the tee joint and a downstream water filling and draining valve group positioned at the downstream of the tee joint.

The elevation of the part of the self-flowing filling drainage pipe connected with the maintenance drainage main pipe II is higher than the elevation of the ports at the two ends of the self-flowing filling drainage pipe.

A trash rack is arranged at a water intake port of the overhauling water intake pipe.

And a part of the overhaul drainage pumps on the overhaul drainage branch pipes adopt overhaul drainage small pumps, and the overhaul drainage pumps on the other overhaul drainage branch pipes adopt overhaul drainage large pumps.

And the overhaul drain main pipe II is divided into an overhaul drain main pipe II-I and an overhaul drain main pipe II-II, the overhaul drain small pump and part of the overhaul drain big pumps are communicated with the overhaul drain main pipe II-I, and the rest overhaul drain big pumps are communicated with the overhaul drain main pipe II-II.

The self-flowing water filling and draining pipe is divided into a self-flowing water filling and draining pipe I connected with the maintenance draining main pipe II-I and a self-flowing water filling and draining pipe II connected with the maintenance draining main pipe II-II.

And a flange capable of mounting a blind plate is arranged at the end of the self-flowing water filling and discharging pipe connected with a downstream river channel.

A drainage method of the plunge pool overhauling drainage and water refilling system is characterized in that:

opening a water charging and discharging valve group on the self-flowing water charging and discharging pipe, and discharging all water bodies higher than the water level of the downstream river channel in the plunge pool into the downstream river channel;

judging the water level in the plunge pool and the water level condition in a downstream river channel according to the flow signal change of a flow meter on the self-flowing water filling and draining pipe;

when the water level of the plunge pool and the water level of a downstream river channel are basically kept flat, the water filling and draining valve group is turned off, the maintenance water taking isolation valve on the maintenance water taking pipe I is opened, and water in the plunge pool is led to the maintenance draining pump through the maintenance water taking pipe I, the maintenance draining main pipe I and the maintenance draining branch pipe;

starting a plurality of maintenance drainage pumps, pumping water in the plunge pool to a water level near a water intake of a maintenance water intake pipe I, stopping pumping water by the maintenance drainage pumps, and closing a maintenance water intake isolation valve on the maintenance water intake pipe I;

opening a backwashing valve group on the backwashing pipe, opening a maintenance water taking isolation valve on a maintenance water taking pipe II, and washing the trash rack and the maintenance water taking pipe II by utilizing the water pressure of downstream tail water higher than the water level in the upstream plunge pool;

after the flushing is finished, closing the backwashing valve group, and draining residual accumulated water in the plunge pool by using a plurality of maintenance drainage pumps;

and monitoring the water level in the water collecting pond in the plunge pool by utilizing a pressure transmitter signal arranged on the maintenance drainage header pipe I, and controlling a plurality of maintenance drainage pumps to drain accumulated water in the water collecting pond in the plunge pool.

A water recharging method of the plunge pool overhauling, draining and recharging system is characterized in that:

opening a water charging and discharging valve group on the self-flowing water charging and discharging pipe, and automatically recharging the downstream water of the secondary dam to the plunge pool through the self-flowing water charging and discharging pipe by utilizing the fact that the water level of a downstream riverway is higher than the elevation of the bottom plate in the plunge pool;

monitoring the water flow passing through the self-flowing water filling and draining pipeline through data transmitted by a flowmeter arranged on the self-flowing water filling and draining pipeline, and further judging whether water filling is finished or not;

and when the water filling is finished, closing the water filling and discharging valve group on the self-flowing water filling and discharging pipeline.

The utility model has the advantages that: the utility model discloses a set up the intake of different elevations and solve the pond in the plunge pool maintenance drainage system and roll the stone to the influence of intake, also can solve floater and sediment deposit and overhaul drainage system's silt siltation sum and equipment safe operation influence to the plunge pool.

The utility model solves the problem of the automatic pumping and draining system for seeper water in the initial stage of pumping a large amount of water and in the later stage of the overhaul in the pond by arranging the pump sets with different sizes and different types; a reasonable back washing pipeline is arranged to prepare a standby measure for solving the silting problem of water taking and draining.

The utility model discloses in through overhauing the intake pipe, overhaul drainage house steward I, overhaul drainage branch pipe, overhaul drainage house steward II and the drainage pipe that fills that flows automatically combine to set up the drainage pipeline that fills when the plunge pool overhauls, and consider to set up at reasonable water level elevation, can satisfy the drainage needs that fills from flowing, still be unlikely to produce stifled, and can also provide safe guarantee for the drainage pipeline that fills silts up automatically with the help of the powerful drainage ability of water pump package, will flow automatically simultaneously and fill drainage pipeline and equipment setting in reasonable elevation two dam bodies and special valve chamber, the shutoff of low reaches river course outlet has both been solved, produced risk when also having reduced the difficult shutoff of intake in the past and shutoff.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

Fig. 4 is a cross-sectional view taken along line C-C of fig. 1.

FIG. 5 is an isometric view of the tubing and apparatus of the example.

In the figure: 1. a water collecting tank; 2. a trash rack; 3. overhauling the water taking pipe I; 4. overhauling a main drainage pipe I; 5. overhauling the drainage branch pipe; 6. overhauling a water taking pipe II; 7. a self-flowing water filling and draining pipe; 701. a self-flowing water filling and draining pipe I; 702. a self-flowing water filling and draining pipe II; 8. overhauling a main drainage pipe II; 801. overhauling a main drainage pipe II-I; 802. overhauling a main drainage pipe II-II; 9. overhauling the water taking isolation valve; 10. overhauling a large drainage pump; 11. a water intake; 12. a backwash pipe; 13. a pressure transmitter; 14. a corrugated expansion joint; 15. overhauling the small drainage pump; 16. the isolation ball valve is overhauled after the large pump; 17. a pressure gate valve is manufactured behind the big pump; 18. a large pump rear hydraulic control valve; 20. the isolation ball valve is overhauled before the big pump; 21. the isolation ball valve is overhauled before the small pump; 22. a hydraulic control valve behind the small pump; 23. making a pressure gate valve behind the small pump; 24. the isolation ball valve is overhauled after the small pump; 25. backwashing the isolation ball valve; 26. backwashing the operational ball valve; 27. a flow meter; 28. a self-flowing water filling and draining maintenance valve; 29. a flow charging and discharging operation valve; 30. a blind plate; 31. and (4) a flange.

Detailed Description

This embodiment is a pond on water cushion overhauls drainage and water system of refilling, sets up in the secondary dam, has: the device comprises a self-flowing water filling and draining pipe, a water collecting tank, a maintenance draining pipeline, a back flushing pipeline and a control monitoring system.

The self-flowing water filling and draining pipe in the embodiment is provided with a self-flowing water filling and draining pipe I and a self-flowing water filling and draining pipe II, the self-flowing water filling and draining pipe I and the self-flowing water filling and draining pipe II are both communicated with a water cushion pond at the upstream of the secondary dam and a river channel at the downstream, and the connecting end of the self-flowing water filling and draining pipe I and the self-flowing water filling and draining pipe II with the river channel at the downstream is provided with a flange capable of installing a blind plate.

A water collecting tank is arranged in a region where the central line of the bottom of the inverted arch water pad pond is connected with the two dams, and a trash rack is arranged in front of the water collecting tank to prevent large and more rolling stones from falling into the water collecting tank when the water pad pond floods, so that the water collecting tank is kept from being filled with the rolling stones.

In this embodiment, repair water drainage pipeline is including overhauing the intake pipe, overhauing drainage house steward I, overhauing the branch drain pipe and overhauing drainage house steward II, and wherein overhauing the intake pipe and having two and overhauing intake pipe I and one and overhauing intake pipe II, overhauing all to be provided with on intake pipe I, II and overhauing and getting the water isolation valve. The water intake intercommunication catch basin of overhauing intake pipe I, II is provided with the trash rack, the water intake of overhauing intake pipe I arranges that the elevation is higher than pond bottom elevation of water cushion, it arranges that II water intakes of overhauing intake pipe are less than pond bottom elevation of water cushion to overhaul the intake, can avoid as far as possible to block up the influence by the debris in the pond aquatic body, guarantee that a large amount of ponding in the pond of water cushion is through this passageway drainage to low reaches river course, be located the sump pit bottom, satisfy and can collect a small amount of seepage ponding in the pond of water cushion automatically after the catch basin desilting.

In the embodiment, the water outlets of the two overhauling water taking pipes I and the water taking pipe II are connected with an overhauling main drain pipe I together, and a corrugated expansion joint is arranged on the overhauling main drain pipe I.

In the embodiment, the overhaul drain main pipe II is divided into an overhaul drain main pipe II-I and an overhaul drain main pipe II-II, the overhaul drain main pipe II-I is communicated with the self-flowing water filling drain pipe I through a tee joint, the overhaul drain main pipe II-II is communicated with the self-flowing water filling drain pipe II through a tee joint, and horizontal connection is adopted, so that silt is prevented from entering the overhaul drain main pipe II, and siltation of the overhaul drain main pipe II is avoided. An upstream water charging and discharging valve group and a downstream water charging and discharging valve group are arranged on the upper part of the tee joint and the lower part of the tee joint on the self-flowing water charging and discharging pipe I and the self-flowing water charging and discharging pipe II. The upper reaches fill the drain valve group and fill the drain service valve and fill the drain operation valve from flowing certainly including flowing certainly with the drain valve group, and the low reaches fills the drain valve group and fills the drain service valve from flowing certainly including flowing certainly.

In the embodiment, the elevations of the parts of the self-flowing water filling and draining pipes I and II, which are connected with the maintenance and draining main pipes II-I and II-II, are higher than the elevations of the ports at the two ends of the self-flowing water filling and draining pipes I and II, so that the influence of silt deposition at the upstream and the downstream on a maintenance and draining system of the plunge pool is avoided, and the smoothness of the system pipeline and equipment is ensured. And the overhauling main drainage pipes II-I and II-II are horizontally connected with the corresponding self-flowing filling drainage pipes I and II, so that silt is prevented from entering the overhauling main drainage pipes II-I and II-II.

In the embodiment, the overhaul drainage main pipe I is communicated with the overhaul drainage main pipes II-I through a plurality of overhaul drainage branch pipes, wherein overhaul drainage small pumps are arranged on part of the overhaul drainage branch pipes, and overhaul drainage large pumps are arranged on the other overhaul drainage branch pipes; the overhaul drainage main pipe I is communicated with the overhaul drainage main pipe II-I through a plurality of overhaul drainage branch pipes, and the overhaul drainage branch pipes are provided with overhaul drainage large pumps.

In the embodiment, a large pump front overhaul isolation ball valve is arranged on an overhaul drainage branch pipe before an overhaul drainage large pump, and a large pump rear hydraulic control valve, a large pump rear pressure-making gate valve and a large pump rear overhaul isolation ball valve are arranged on an overhaul drainage branch pipe behind the pump. And a small pump rear hydraulic control valve, a small pump rear pressure-making gate valve and a small pump rear maintenance isolation ball valve are arranged on the maintenance drainage branch pipe behind the pump.

The backwashing pipeline in the embodiment comprises a backwashing pipe, a maintenance water taking pipe II, a maintenance main drainage pipe I, a maintenance main drainage pipe II-I and a self-flowing water filling and draining pipe I, wherein the maintenance main drainage pipe I and the maintenance main drainage pipe II-I are communicated through the backwashing pipe, a backwashing valve group is arranged on the backwashing pipe, and the backwashing valve group comprises a backwashing operation ball valve and a backwashing isolation ball valve.

In this embodiment, a control and monitoring system circuit is connected with a flow meter and a pressure transmitter, wherein the flow meter is installed on the self-flowing water charging and discharging pipe and is used for acquiring flow change in the self-flowing water charging and discharging pipe; and the two pressure transmitters are arranged on the maintenance main drain pipe I and are used for monitoring the water level of the water collecting tank in the plunge pool.

The method for overhauling and draining the plunge pool in the embodiment comprises the following steps:

the maintenance and drainage of the plunge pool are generally arranged to drain accumulated water in the plunge pool to the downstream under the condition that the downstream water level is lower, and accumulated water in the plunge pool is drained to the downstream by utilizing a self-flowing filling and drainage pipe and the like in a plunge pool maintenance drainage and water recharging system as far as possible, so that the energy consumption of system operation is reduced.

And opening a self-flowing water filling and draining maintenance valve, a self-flowing water filling and draining operation valve and the like on the self-flowing water filling and draining pipe, connecting the upstream plunge pool of the secondary dam and the downstream riverway through the self-flowing water filling and draining pipe, and discharging all water bodies higher than the water level of the downstream riverway in the plunge pool into the downstream riverway.

And judging the water level in the plunge pool and the water level condition in the downstream river according to the flow signal change of the flow meter on the self-flowing water filling and draining pipe.

When the water level of the plunge pool and the water level of a downstream riverway are basically kept constant, the gravity flow water filling and discharging operation valves and the like at the upper three-way upstream of the gravity flow water filling and discharging pipe are respectively closed, the water intake is opened, the maintenance water taking isolation valve on the maintenance water taking pipe I with higher elevation is arranged, and the water body with better corresponding water quality in the plunge pool is led to the front of a pump device of a pumping and discharging system consisting of a large pump and a small pump.

And (3) starting a plurality of large overhaul and drainage pumps by utilizing relevant equipment such as site control equipment, power transformation and distribution equipment, power cables, data optical fibers, a control monitoring system and the like, pumping the water in the plunge pool to a water level to be close to water inlets of two overhaul and water taking pipes I arranged at higher elevations, and stopping pumping water by the large overhaul and drainage pumps.

Closing the overhauling water taking isolation valve on the overhauling water taking pipe I, closing the overhauling isolation ball valve before the big pump and the overhauling isolation ball valve before the small pump, opening the backwash pipe operation ball valve and the backwash pipe isolation ball valve, opening the overhauling water taking isolation valve on the overhauling water taking pipe II, and flushing the trash rack and the overhauling water taking pipe II in the water collecting tank and in front of the water collecting tank by utilizing the water pressure that the downstream tail water is higher than the water level in the upstream plunge pool.

After the flushing is finished, closing a backwash pipe operation ball valve and a backwash pipe isolation ball valve on a backwash pipe, opening a maintenance isolation ball valve before a large pump and a maintenance isolation ball valve before a small pump, and draining residual accumulated water in the plunge pool by using a plurality of maintenance drainage large pumps and maintenance drainage small pumps.

And the maintenance drainage large pump is stopped, the maintenance drainage small pump is switched to an automatic operation mode, the water level in the water collecting pond in the plunge pool is monitored by utilizing two pressure transmitter signals arranged by the maintenance drainage pipe I, and the maintenance drainage small pump is controlled to discharge accumulated water in the water collecting pond in the plunge pool.

The method for refilling water after the completion of the overhaul of the plunge pool in the embodiment comprises the following steps:

and opening a self-flowing water filling and draining maintenance valve, a self-flowing water filling and draining operation valve and the like on the self-flowing water filling and draining pipe, and connecting the upstream plunge pool of the secondary dam and the downstream river channel through the self-flowing water filling and draining pipe.

And the water level of the downstream river channel is higher than the elevation of the bottom plate in the plunge pool, so that the downstream water of the secondary dam flows back into the plunge pool through the self-flowing water charging and discharging pipe.

Data monitoring transmitted by a flowmeter arranged on the self-flowing water filling and draining pipe can monitor the water flow passing through the self-flowing water filling and draining pipe, and then whether water filling is finished is judged.

And after the water filling is finished, closing the self-flowing water filling and draining operation valve on the self-flowing water filling and draining pipeline, and the like.

When the plunge pool is used for flood discharge, the dam deep hole accident gate can be partially opened, the plunge pool is filled with water to the dam crest elevation of the secondary dam, and the dam deep hole accident gate is fully opened to meet the flood discharge requirement.

In the embodiment, the equipment maintenance of the plunge pool drainage system is carried out in two levels. The first layer is implemented by the following operation steps: the method comprises the steps of firstly closing a water charging and discharging valve group on a self-flowing water charging and discharging pipe, achieving the purpose of cutting off water in an upstream plunge pool and water in a downstream riverway, and realizing the maintenance of all residual equipment in a water discharging pump room and a self-flowing water charging and discharging valve room in a secondary dam body. And the second layer of implementation operation step comprises the steps of draining the water in the plunge pool, fastening and connecting the blind plate and a flange on the self-flowing water filling and draining pipe, and cutting off downstream water, so that the maintenance of all equipment in the water draining pump room and the self-flowing water filling and draining valve room in the second dam body can be realized.

For the water conservancy and hydropower engineering provided with a large plunge pool, after the safe and reliable water plunge pool water filling and draining system is adopted, main water pumping and draining equipment, power transformation and distribution equipment and hoisting equipment can be arranged at proper positions in a secondary dam for the maintenance of water pumping and draining requirements in the plunge pool; the method is characterized in that maintenance water taking pipes with water taking ports of different elevations are arranged, a self-flowing water filling and draining valve chamber is arranged at a higher position, the self-flowing water filling and draining pipe is combined with a drainage main pipe and arranged at an upper elevation above a downstream riverbed and arranged along a slope, so that the influence of sediment accumulation at the upper and lower reaches of a secondary dam on a water cushion pond maintenance and drainage system can be avoided to the greatest extent, and the smoothness of system pipelines and equipment is ensured; the self-flowing water filling and discharging valve chamber is arranged in the gallery on one side of the plunge pool, and the impact of high-speed water flow on the bottom plate when the plunge pool is filled with water can be avoided by utilizing the slopes of the plunge pool and the bottom plate, so that a better energy dissipation effect is achieved, and the blocking resistance, the humidity resistance and the valley extrusion deformation resistance of the plunge pool overhauling and discharging system are greatly improved. Meanwhile, the system can be provided with a field operation and remote control monitoring system, automatic water filling and draining control can be realized, the operation of operators is convenient, the tedious construction of a temporary water filling and draining system and the potential safety hazard of system operation are avoided, and the stable operation of the plunge pool can be further ensured. Meanwhile, additional investment is not required to be added in the system, the water filling and draining time during maintenance is saved, and the water filling and draining efficiency of the plunge pool is greatly improved; in addition, the system greatly reduces the electric energy consumed during water charging and discharging, and the technical scheme is more energy-saving and environment-friendly.

Claims (8)

1. The utility model provides a plunge pool overhauls drainage and water refilling system, sets up in two dams, its characterized in that has:

the self-flowing water filling and draining pipe (7) is communicated with the upstream plunge pool and the downstream river channel of the secondary dam, and is provided with a water filling and draining valve bank;

the flowmeter is arranged on the self-flowing filling and draining pipe (7) and is used for acquiring the flow change in the self-flowing filling and draining pipe (7);

the water collecting tank (1) is arranged in a region where the bottom of the plunge pool is connected with the secondary dam, and a trash rack (2) is arranged at a water inlet of the water collecting tank;

the overhaul drainage pipeline comprises an overhaul water taking pipe, an overhaul drainage header pipe I (4), overhaul drainage branch pipes (5) and an overhaul drainage header pipe II (8), wherein one end of the overhaul water taking pipe is communicated with the water collecting tank (1), the other end of the overhaul water taking pipe is communicated with the overhaul drainage header pipe I (4), the overhaul drainage header pipe I (4) is communicated with the overhaul drainage header pipe II (8) through the overhaul drainage branch pipes (5), and a water outlet of the overhaul drainage header pipe II (8) is communicated with a downstream river channel; wherein the overhaul water taking pipe is provided with an overhaul water taking isolation valve (9), and the overhaul water drainage branch pipe (5) is provided with an overhaul water drainage pump;

the backwashing pipeline (12) comprises the maintenance water intake pipe, a maintenance main drainage pipe I (4) and a maintenance main drainage pipe II (8), the maintenance main drainage pipe I (4) is connected with the maintenance main drainage pipe II (8) through the backwashing pipe (12), and the backwashing pipe (12) is provided with a backwashing valve group;

the pressure transmitter (13) is arranged on the maintenance drainage main pipe I (4) and is used for monitoring the water level of the water collecting tank (1) in the plunge pool;

the control monitoring system is in circuit connection with the flowmeter and the pressure transmitter (13);

the overhaul water intake pipe is divided into an overhaul water intake pipe I (3) and an overhaul water intake pipe II (6), wherein the water intakes (11) of the overhaul water intake pipes I and II are respectively positioned at different heights in the water collecting tank (1).

2. The plunge pool service drainage and refill water system of claim 1, wherein: and the water outlet of the maintenance drainage main pipe II (8) is communicated with the self-flowing water charging and discharging pipe (7) through a tee joint, and the water charging and discharging valve group comprises an upstream water charging and discharging valve group positioned at the upstream of the tee joint and a downstream water charging and discharging valve group positioned at the downstream of the tee joint.

3. The plunge pool service drainage and refill water system of claim 2, wherein: the height of the part of the self-flowing filling drainage pipe (7) connected with the maintenance drainage main pipe II (8) is higher than the height of the ports at the two ends of the self-flowing filling drainage pipe.

4. The plunge pool service drainage and refill water system of claim 1, wherein: a trash rack (2) is arranged at a water intake (11) of the overhaul water intake pipe.

5. The plunge pool maintenance drainage and refill system of any one of claims 1-3, wherein: and a part of the overhaul drainage pumps on the overhaul drainage branch pipes (5) adopt overhaul drainage small pumps (15), and the overhaul drainage pumps on the rest overhaul drainage branch pipes (5) adopt overhaul drainage large pumps (10).

6. The plunge pool service drainage and refill water system of claim 5, wherein: the maintenance drain main pipe II (8) is divided into a maintenance drain main pipe II-I (801) and a maintenance drain main pipe II-II (802), the maintenance drain small pump (15) and a part of the maintenance drain large pump (10) are communicated with the maintenance drain main pipe II-I (801), and the rest of the maintenance drain large pump (10) is communicated with the maintenance drain main pipe II-II (802).

7. The plunge pool service drainage and refill water system of claim 6, wherein: the self-flowing water filling and draining pipe (7) is divided into a self-flowing water filling and draining pipe I (701) connected with the overhaul draining main pipe II-I (801) and a self-flowing water filling and draining pipe II (702) connected with the overhaul draining main pipe II-II (802).

8. The plunge pool service drainage and refill water system of claim 1, wherein: and a flange (31) capable of mounting a blind plate (30) is arranged at the end of the self-flowing water filling and draining pipe (7) connected with a downstream river channel.

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